commit 1fea5c4472b29fff85ae40a8d7f0c845347ad5c6
author Alexander Belopolsky <alexander.belopolsky@gmail.com> Tue Nov 30 01:18:17 2010 +0000
committer Alexander Belopolsky <alexander.belopolsky@gmail.com> Tue Nov 30 01:18:17 2010 +0000
tree a159285c250922c6e4528a12fc7b29c0f6f086bb
parent 30ec1154aca1756a35c8bfe9ff35bfa77073ceba

Merged revisions 86857 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r86857 | raymond.hettinger | 2010-11-28 22:56:12 -0500 (Sun, 28 Nov 2010) | 1 line

  Issue #10565:  Iterator ABC should require both __next__ and __iter__.
........

Lib/_abcoll.py

diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index 73e668c..e7376e4 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -82,7 +82,7 @@
     @classmethod
     def __subclasshook__(cls, C):
         if cls is Iterator:
-            if _hasattr(C, "next"):
+            if _hasattr(C, "next") and _hasattr(C, "__iter__"):
                 return True
         return NotImplemented